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Matthew Sweet chats to companion Bonnie Langford.

A look at the subtle (and not so subtle!) links to the show's past and future contained within the story of The Five Doctors.

The making of Revenge of the Cybermen, with director Michael E Briant, incoming producer Philip Hinchcliffe and outgoing producer Barry Letts.

This documentary examines Tom Baker's introduction as the Doctor and the making of his first story, Robot.

Cast and crew look back at the making of Terror of the Zygons.

The cast and crew of The Seeds of Doom look back on the making of this story.